Glide avalanches are a special type of full depth avalanches. They can happen both in dry or wet snow, but always in smooth terrain. They are self-triggered, very rarely human triggered.
Tactics: Avoid glide prone terrain
Duration: hours – days
- Glide crack sor glide avalanches in similar slopes
- Wet glide avalanches are related with high temperaturas and sun radiation, or rain and fog
- Big snowfall over unfrozen ground
- Smooth slopes: rock slabs and steep grassy slopes overall
- Wet glide avalanches start at low altitude and sunnier slopes
- Dry glide avalanches are more unpredictable, they can trigger even at night
- Avoid glide prone terrain when these avalanches are shown in the bulletin
- Do not stay under the cracks, many end up triggering
- Wet glide avalanches are more frequent in the afternoon
Glides are a particular kind of avalanches, which behave differently to others. They are hard to forecast and hard to control.
Slow gliding of snow generates a tensile fracture, which can become an avalanche immediatly, stay open hours/days before the avalanche triggers or never generate an avalanche.